Safe Surfing An Introduction to the Internet BOLLI Spring 2008 Lesson 3: OSPs, ISPs, & Browsers 3/19/2008

Where Are We Going Today? 1. What's in the News 2. Class Q & A …. YouTube 3. Homework Assignment #2  to everyone?  How many dial-up ISPs?  What’s on Wikipedia? 4. Getting Connected What is the Internet? <> How did/does it work? <> Hooking up at home <> Service providers <> Web Portals <> Hands-on Exercises 5. Time Permitting: Browsers <> Maps 6. Open Q&A

What’s In The News? Class:Class:? YouTube:

The Internet World Wide Web Instant Messaging (I/M) What is the Internet? VOIP (Voice Over Internet Protocol) Web Cam TV & Radio Video Movies

How Did the Internet Work? Yesterday

How Does the Internet Work? Cable, Satellite, DSL, WiFi MY TELEPHONE Today

Getting Hooked-Up at Home Your Home The Internet

Service Providers OSPs & ISPs (7,000+ in the USA)OSPs & ISPs (7,000+ in the USA)OSPs & ISPs (7,000+ in the USA)OSPs & ISPs (7,000+ in the USA) Telecom Giants & Ma & Pa CompaniesTelecom Giants & Ma & Pa CompaniesTelecom Giants & Ma & Pa CompaniesTelecom Giants & Ma & Pa Companies Which One?Which One?Which One?Which One? Content?Content?Content? Cost?Cost?Cost? Speed?Speed?Speed? Service Level?Service Level?Service Level?Service Level? Location?Location?Location?

Web Portals A gateway to the World Wide WebA gateway to the World Wide Web Links to all the information that is important to you on a daily basisLinks to all the information that is important to you on a daily basis  Recent news stories, weather reports and forecasts, stock quotes, sport scores An extension of a search engineAn extension of a search engine Set your preset startup page to your portalSet your preset startup page to your portal Personalize content - Your favorite features in a single pagePersonalize content - Your favorite features in a single page Mail, news, weather, stock prices, sports scores, TV, movie listings, and mor , news, weather, stock prices, sports scores, TV, movie listings, and more Many also feature free- , chat, and customized news-search tools.Many also feature free- , chat, and customized news-search tools. Get Syndicated! Real Simple Syndication – RSSGet Syndicated! Real Simple Syndication – RSS

– Real Simple Syndication – Real Simple Syndication  A way to publish frequently updated content including: Blog entriesBlog entriesBlog News headlinesNews headlines PodcastsPodcastsPodcasts  An RSS document contains either a summary of content from an associated web site or the full text.  RSS makes it possible for people to keep up with their favorite web sites in an automated manner that can be piped into special programs or filtered displays (Web Portals).  Subscribe by clicking an RSS icon in a browser that initiates the subscription process. The reader (Web Portal) checks your subscribed feeds regularly for new content, downloading any updates that it finds.

Location Location Location

Sample “The List” Dial upDial up BroadbandBroadband HostingHosting ApplicationsApplications ServicesServices

Questions & Answers

Open Internet Explorer.Open Internet Explorer. Go to Google home page.Go to Google home page. Select “Tools”, “Internet Options” from the Browser menu.Select “Tools”, “Internet Options” from the Browser menu. Select “Use Current”.Select “Use Current”. Click “OK”.Click “OK”. Go to another Web page and test the home page buttonGo to another Web page and test the home page button Exercise: Reset Browser Home Page

2. Select “Tools”, “Internet Options” from the browser menu 3. Click on “Use Current” and select “OK” 1. Locate the desired new home page in your browser

Exercises – Time Permitting Maps Mapquest

Speed Speed Speed Dial-up 56KBDial-up 56KBDial-up DSL 128KB – 50MBDSL 128KB – 50MBDSL Broadband: DSL 64 – 30 MBBroadband: DSL 64 – 30 MBBroadband: DSL 64 – 30 MBBroadband: DSL 64 – 30 MB Broadband: Cable 64KB – 50MBBroadband: Cable 64KB – 50MBBroadband: Cable Broadband: Cable Broadband: FiOS 2 MB – 50 MBBroadband: FiOS 2 MB – 50 MBBroadband: FiOS Broadband: FiOS Broadband: ISDNBroadband: ISDNBroadband: ISDNBroadband: ISDN Wireless, ISDN, & moreWireless, ISDN, & moreWireless, ISDN, & moreWireless, ISDN, & more

Browsing the Web NNavigating (Surfing) the Web

How Does Web Browsing Work? 1. Start your browser program (Internet Explorer, Firefox, etc.). 2. Enter the Web page address (aka “URL”) The browser sends a message directly to that address requesting a response.The browser sends a message directly to that address requesting a response. The requested response is returned to your computer and is displayed by the browser.The requested response is returned to your computer and is displayed by the browser.

Using a Domain NameUsing a Domain Name For Brandeis University, you enter: Brandeis University, you enter: A corresponding Internet IP address is substituted (i.e., ) by a “Domain Name Server”A corresponding Internet IP address is substituted (i.e., ) by a “Domain Name Server” You could optionally use the IP address to request a pageYou could optionally use the IP address to request a page URL (Uniform Resource Locator)URL (Uniform Resource Locator) Each page within a Web site has its own unique URLEach page within a Web site has its own unique URL The BOLLI Web pages are part of the Brandeis Web site and our “URL” is: BOLLI Web pages are part of the Brandeis Web site and our “URL” is: Format RulesFormat Rules Cannot contain: spaces or special characters except “-”, “_” “/” and “.”Cannot contain: spaces or special characters except “-”, “_” “/” and “.” Must contain a minimum of three parts separated by a period “.”Must contain a minimum of three parts separated by a period “.” Last part must be one of following: com, edu, gov, mil, net, us, ca, il, fr, de, ru, etc.Last part must be one of following: com, edu, gov, mil, net, us, ca, il, fr, de, ru, etc. Web Address Samples ( prefix is optional and implicit)Web Address Samples ( prefix is optional and implicit) Finance.yahoo.comFinance.yahoo.comFinance.yahoo.com What’s in a Web Address?

Major Web Browsers Internet Explorer – “IE” (Microsoft Corp.)Internet Explorer – “IE” (Microsoft Corp.) Netscape Navigator (Netscape Corp.)Netscape Navigator (Netscape Corp.) Firefox (The Mozilla Organization)Firefox (The Mozilla Organization) Opera (Opera Software)Opera (Opera Software) AOL (America Online)AOL (America Online)

Internet Explorer

AOL

And More… Netscape Firefox Opera

Major Browser Components Toolbars Sidebar Main Window

Important Toolbar Features Prev Pg Next Pg Stop Refresh Home Pg Favorites On/Off History On/Off Page Print Page

More Toolbar Features Google Search Field Requested Web Page Start Google Search Get Requested Web Page Toolbar Shortcuts

Sidebar Palettes Favorites History

eBoard & Listserve